diff --git a/line.py b/line.py
index 1e4ce6a56b..99fb530657 100644
--- a/line.py
+++ b/line.py
@@ -113,15 +113,9 @@ class EnterLines(Wizard):
         model_data_obj = self.pool.get('ir.model.data')
         act_window_obj = self.pool.get('ir.action.act_window')
         employee_obj = self.pool.get('company.employee')
-
-        model_data_ids = model_data_obj.search(cursor, user, [
-            ('fs_id', '=', 'act_line_form'),
-            ('module', '=', 'timesheet'),
-            ('inherit', '=', False),
-            ], limit=1, context=context)
-        model_data = model_data_obj.browse(cursor, user, model_data_ids[0],
-                context=context)
-        res = act_window_obj.read(cursor, user, model_data.db_id, context=context)
+        act_window_id = model_data_obj.get_id(cursor, user, 'timesheet',
+                'act_line_form', context=context)
+        res = act_window_obj.read(cursor, user, act_window_id, context=context)
         date = data['form']['date']
         date = Date(date.year, date.month, date.day)
         res['pyson_domain'] = PYSONEncoder().encode([
@@ -213,15 +207,9 @@ class OpenHoursEmployee(Wizard):
     def _action_open(self, cursor, user, data, context=None):
         model_data_obj = self.pool.get('ir.model.data')
         act_window_obj = self.pool.get('ir.action.act_window')
-
-        model_data_ids = model_data_obj.search(cursor, user, [
-            ('fs_id', '=', 'act_hours_employee_form'),
-            ('module', '=', 'timesheet'),
-            ('inherit', '=', False),
-            ], limit=1, context=context)
-        model_data = model_data_obj.browse(cursor, user, model_data_ids[0],
-                context=context)
-        res = act_window_obj.read(cursor, user, model_data.db_id, context=context)
+        act_window_id = model_data_obj.get_id(cursor, user, 'timesheet',
+                'act_hours_employee_form', context=context)
+        res = act_window_obj.read(cursor, user, act_window_id, context=context)
         res['pyson_context'] = PYSONEncoder().encode({
             'start_date': data['form']['start_date'],
             'end_date': data['form']['end_date'],
diff --git a/work.py b/work.py
index f3e6879054..b8f209a365 100644
--- a/work.py
+++ b/work.py
@@ -167,15 +167,9 @@ class OpenWork(Wizard):
     def _action_open_work(self, cursor, user, data, context=None):
         model_data_obj = self.pool.get('ir.model.data')
         act_window_obj = self.pool.get('ir.action.act_window')
-
-        model_data_ids = model_data_obj.search(cursor, user, [
-            ('fs_id', '=', 'act_work_tree2'),
-            ('module', '=', 'timesheet'),
-            ('inherit', '=', False),
-            ], limit=1, context=context)
-        model_data = model_data_obj.browse(cursor, user, model_data_ids[0],
-                context=context)
-        res = act_window_obj.read(cursor, user, model_data.db_id, context=context)
+        act_window_id = model_data_obj.get_id(cursor, user, 'timesheet',
+                'act_work_tree2', context=context)
+        res = act_window_obj.read(cursor, user, act_window_id, context=context)
         res['pyson_context'] = PYSONEncoder().encode({
             'from_date': data['form']['from_date'],
             'to_date': data['form']['to_date'],
@@ -191,15 +185,9 @@ class OpenWork2(OpenWork):
     def _action_open_work(self, cursor, user, data, context=None):
         model_data_obj = self.pool.get('ir.model.data')
         act_window_obj = self.pool.get('ir.action.act_window')
-
-        model_data_ids = model_data_obj.search(cursor, user, [
-            ('fs_id', '=', 'act_work_form2'),
-            ('module', '=', 'timesheet'),
-            ('inherit', '=', False),
-            ], limit=1, context=context)
-        model_data = model_data_obj.browse(cursor, user, model_data_ids[0],
-                context=context)
-        res = act_window_obj.read(cursor, user, model_data.db_id, context=context)
+        act_window_id = model_data_obj.get_id(cursor, user, 'timesheet',
+                'act_work_form2', context=context)
+        res = act_window_obj.read(cursor, user, act_window_id, context=context)
         res['pyson_context'] = PYSONEncoder().encode({
             'from_date': data['form']['from_date'],
             'to_date': data['form']['to_date'],
@@ -229,14 +217,9 @@ class OpenWorkGraph(Wizard):
         if context is None:
             context = {}
 
-        model_data_ids = model_data_obj.search(cursor, user, [
-            ('fs_id', '=', 'act_work_form3'),
-            ('module', '=', 'timesheet'),
-            ('inherit', '=', False),
-            ], limit=1, context=context)
-        model_data = model_data_obj.browse(cursor, user, model_data_ids[0],
-                context=context)
-        res = act_window_obj.read(cursor, user, model_data.db_id, context=context)
+        act_window_id = model_data_obj.get_id(cursor, user, 'timesheet',
+                'act_work_form3', context=context)
+        res = act_window_obj.read(cursor, user, act_window_id, context=context)
         if 'active_id' in context:
             work = work_obj.browse(cursor, user, context['active_id'],
                     context=context)